Add /zen/v1 passthrough for the upstream Zen API - #2
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Expose the raw OpenCode Zen API surface under /zen/v1/*, relayed verbatim to https://opencode.ai/zen/v1/*: no free-model filtering, no -free suffix mapping, and no protocol conversion (no reasoning backfill either). - upstreamUrl is now prefix-aware so an already-/zen path is not prefixed twice; /v1/* routing is unchanged - new edge-functions/zen/v1/[[default]].js registers the route and delegates to the main handler - 8 new tests cover prefix detection, URL mapping, and end-to-end verbatim relay for chat/messages/models incl. SSE and non-2xx passthrough - README documents the route and the deploy step to refresh routes.json
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概述
为网关新增
/zen/v1/*原样透传：把请求原样转发到上游 OpenCode Zen 的同一路径（https://opencode.ai/zen/v1/*），不做任何改写——不过滤免费模型、不追加-free后缀、不进行协议转换、无reasoning_content兜底。客户端需按上游原生协议调用。改动
edge-functions/v1/[[default]].js：upstreamUrl改为前缀感知——入站路径已带/zen时不再二次前置（原会把/zen/v1/x拼成/zen/zen/x）；/v1/*路由行为不变。edge-functions/zen/v1/[[default]].js（新增）：EdgeOne 文件路由注册/zen/v1/*，委托给主处理器，请求落入通用透传分支（body 原样、状态码/头/SSE 原样返回）。test/v1-proxy.test.js：新增 8 个用例——前缀边界、URL 去重、chat/messages/models 端到端原样透传、SSE 流透传、非-free不加后缀、非 2xx 状态透传。README.md：路由表新增/zen/v1/*行、透传语义与上游鉴权说明、部署时刷新routes.json的运维要点。验证
oc2api-edgeone.edgeone.dev，Deploymentdpanyt4o7h4d）并经 SOCKS5 代理实测：/v1/models（过滤 7 个）与/zen/v1/models（原始 63 个，含付费模型）行为正确；/v1/chat/completions（含 SSE 流）、/v1/messages（Claude）、/v1/responses三个转换入口均返回 200 与正确格式；/zen/v1/chat/completions原样透传（响应含cost等未清理字段，证明未改写）。Bearer public在鉴权层拒绝付费模型（401 AuthError），透传无法消耗付费额度。部署注意
新增/变更
edge-functions/路由后，需先npx edgeone makers generate-routes（该命令在routes.json已存在时跳过生成，需先删除.edgeone/routes.json）再部署，否则新路径不会触发边端函数。